求助~~ DC后slack是负的怎么解决呢
还是第一次发帖。下面是timing report中的两条具有代表性的路径
（1）
Startpoint: u_amber/u_decode/o_rs_sel_reg_0_
(rising edge-triggered flip-flopclocked by sysclk)
Endpoint: u_amber/u_execute/R_2533
(rising edge-triggered flip-flopclocked by sysclk)
Path Group: sysclk
Path Type: max
Des/Clust/PortWire Load ModelLibrary
------------------------------------------------
system1000000saed32hvt_tt1p05v25c
a25_core280000saed32hvt_tt1p05v25c
a25_register_bank35000saed32hvt_tt1p05v25c
a25_execute35000saed32hvt_tt1p05v25c
a25_barrel_shift8000saed32hvt_tt1p05v25c
a25_alu8000saed32hvt_tt1p05v25c
PointFanoutCapTransIncrPath
----------------------------------------------------------------------------------------------
clock sysclk (rise edge)0.00000.0000
clock network delay (ideal)0.00000.0000
u_amber/u_decode/o_rs_sel_reg_0_/CLK(DFFX1_HVT)0.00000.0000 #0.0000 r
u_amber/u_decode/o_rs_sel_reg_0_/Q (DFFX1_HVT)0.03020.13960.1396 r
u_amber/u_decode/o_rs_sel[0] (net)42.23370.00000.1396 r
u_amber/u_decode/o_rs_sel[0](a25_decode)0.00000.1396 r
u_amber/rs_sel[0] (net)2.23370.00000.1396 r
u_amber/u_execute/i_rs_sel[0](a25_execute)0.00000.1396 r
u_amber/u_execute/i_rs_sel[0] (net)2.23370.00000.1396 r
u_amber/u_execute/u_register_bank/i_rs_sel[0](a25_register_bank)0.00000.1396 r
u_amber/u_execute/u_register_bank/i_rs_sel[0](net)2.23370.00000.1396 r
u_amber/u_execute/u_register_bank/U1025/A(INVX0_HVT)0.03020.19400.3336 r
u_amber/u_execute/u_register_bank/U1025/Y(INVX0_HVT)0.02950.03310.3667 f
u_amber/u_execute/u_register_bank/n3386(net)21.16150.00000.3667 f
u_amber/u_execute/u_register_bank/U921/A2(AND2X1_HVT)0.02950.01260.3792 f
u_amber/u_execute/u_register_bank/U921/Y(AND2X1_HVT)0.03620.06140.4407 f
u_amber/u_execute/u_register_bank/n3397(net)42.41480.00000.4407 f
u_amber/u_execute/u_register_bank/U260/A1(AND2X4_HVT)0.03620.01680.4575 f
u_amber/u_execute/u_register_bank/U260/Y(AND2X4_HVT)0.06870.10400.5615 f
u_amber/u_execute/u_register_bank/n103(net)3218.59030.00000.5615 f
u_amber/u_execute/u_register_bank/U333/A1(AO22X1_HVT)0.06870.06280.6243 f
u_amber/u_execute/u_register_bank/U333/Y(AO22X1_HVT)0.02760.08280.7070 f
u_amber/u_execute/u_register_bank/n142(net)10.64560.00000.7070 f
u_amber/u_execute/u_register_bank/U334/A4(OR4X1_HVT)0.02760.01300.7200 f
u_amber/u_execute/u_register_bank/U334/Y(OR4X1_HVT)0.01780.09910.8191 f
u_amber/u_execute/u_register_bank/n3501(net)10.66610.00000.8191 f
u_amber/u_execute/u_register_bank/U4439/A4(NOR4X1_HVT)0.01780.01340.8325 f
u_amber/u_execute/u_register_bank/U4439/Y(NOR4X1_HVT)0.02240.08110.9135 r
u_amber/u_execute/u_register_bank/n3510(net)21.12750.00000.9135 r
u_amber/u_execute/u_register_bank/U4445/A1(NAND2X0_HVT)0.02240.01310.9266 r
u_amber/u_execute/u_register_bank/U4445/Y(NAND2X0_HVT)0.03780.03710.9637 f
u_amber/u_execute/u_register_bank/n3792(net)10.54250.00000.9637 f
u_amber/u_execute/u_register_bank/U4734/A3(AO21X1_HVT)0.03780.01090.9746 f
u_amber/u_execute/u_register_bank/U4734/Y(AO21X1_HVT)0.02850.05081.0254 f
u_amber/u_execute/u_register_bank/o_rs[6](net)21.09370.00001.0254 f
u_amber/u_execute/u_register_bank/o_rs[6](a25_register_bank)0.00001.0254 f
u_amber/u_execute/reg_bank_rs[6] (net)1.09370.00001.0254 f
u_amber/u_execute/U76/A1 (MUX21X1_HVT)0.02850.01271.0380 f
u_amber/u_execute/U76/Y (MUX21X1_HVT)0.03460.07531.1134 f
u_amber/u_execute/rs[6] (net)10.61750.00001.1134 f
u_amber/u_execute/U931/A1 (AND2X1_HVT)0.03460.01241.1258 f
u_amber/u_execute/U931/Y (AND2X1_HVT)0.02230.04961.1754 f
u_amber/u_execute/shift_amount[6] (net)10.63310.00001.1754 f
u_amber/u_execute/u_barrel_shift/i_shift_amount[6](a25_barrel_shift)0.00001.1754 f
u_amber/u_execute/u_barrel_shift/i_shift_amount[6] (net)0.63310.00001.1754 f
u_amber/u_execute/u_barrel_shift/U39/A1(OR2X1_HVT)0.02230.01271.1881 f
u_amber/u_execute/u_barrel_shift/U39/Y(OR2X1_HVT)0.02520.05261.2407 f
u_amber/u_execute/u_barrel_shift/n585(net)21.29380.00001.2407 f
u_amber/u_execute/u_barrel_shift/U653/A2(OR2X2_HVT)0.02520.01741.2581 f
u_amber/u_execute/u_barrel_shift/U653/Y(OR2X2_HVT)0.05050.07031.3284 f
u_amber/u_execute/u_barrel_shift/n1094(net)127.62540.00001.3284 f
u_amber/u_execute/u_barrel_shift/U83/A1(OR2X1_HVT)0.05050.02991.3583 f
u_amber/u_execute/u_barrel_shift/U83/Y(OR2X1_HVT)0.02430.06521.4235 f
u_amber/u_execute/u_barrel_shift/n535(net)21.13640.00001.4235 f
u_amber/u_execute/u_barrel_shift/U652/A2(OAI21X2_HVT)0.02430.01411.4376 f
u_amber/u_execute/u_barrel_shift/U652/Y(OAI21X2_HVT)0.04960.11151.5491 r
u_amber/u_execute/u_barrel_shift/n404(net)158.79660.00001.5491 r
u_amber/u_execute/u_barrel_shift/U489/A(IBUFFX4_HVT)0.04960.03041.5794 r
u_amber/u_execute/u_barrel_shift/U489/Y(IBUFFX4_HVT)0.02760.06881.6482 f
u_amber/u_execute/u_barrel_shift/n362(net)168.76960.00001.6482 f
u_amber/u_execute/u_barrel_shift/U56/A1(AND2X4_HVT)0.02760.03631.6845 f
u_amber/u_execute/u_barrel_shift/U56/Y(AND2X4_HVT)0.05370.08851.7730 f
u_amber/u_execute/u_barrel_shift/n2061(net)2111.95400.00001.7730 f
u_amber/u_execute/u_barrel_shift/U908/A1(NAND2X0_HVT)0.05370.04361.8166 f
u_amber/u_execute/u_barrel_shift/U908/Y(NAND2X0_HVT)0.04480.03921.8559 r
u_amber/u_execute/u_barrel_shift/n610(net)10.46770.00001.8559 r
u_amber/u_execute/u_barrel_shift/U910/A3(AND4X1_HVT)0.04480.01031.8661 r
u_amber/u_execute/u_barrel_shift/U910/Y(AND4X1_HVT)0.04010.11781.9840 r
u_amber/u_execute/u_barrel_shift/n616(net)10.54020.00001.9840 r
u_amber/u_execute/u_barrel_shift/U914/A1(AND4X1_HVT)0.04010.01181.9958 r
u_amber/u_execute/u_barrel_shift/U914/Y(AND4X1_HVT)0.04100.09312.0889 r
u_amber/u_execute/u_barrel_shift/n620(net)10.68310.00002.0889 r
u_amber/u_execute/u_barrel_shift/U918/A1(NAND4X0_HVT)0.04100.01502.1039 r
u_amber/u_execute/u_barrel_shift/U918/Y(NAND4X0_HVT)0.08040.06912.1730 f
u_amber/u_execute/u_barrel_shift/n632(net)10.56510.00002.1730 f
u_amber/u_execute/u_barrel_shift/U930/A1(OR3X1_HVT)0.08040.01242.1854 f
u_amber/u_execute/u_barrel_shift/U930/Y(OR3X1_HVT)0.02850.08992.2753 f
u_amber/u_execute/u_barrel_shift/n633(net)10.56300.00002.2753 f
u_amber/u_execute/u_barrel_shift/U931/A1(NAND2X0_HVT)0.02850.01232.2876 f
u_amber/u_execute/u_barrel_shift/U931/Y(NAND2X0_HVT)0.05300.03042.3180 r
u_amber/u_execute/u_barrel_shift/n656(net)10.57060.00002.3180 r
u_amber/u_execute/u_barrel_shift/U69/A2(NAND3X0_HVT)0.05300.01252.3305 r
u_amber/u_execute/u_barrel_shift/U69/Y(NAND3X0_HVT)0.10310.10502.4355 f
u_amber/u_execute/u_barrel_shift/o_out[0](net)31.63610.00002.4355 f
u_amber/u_execute/u_barrel_shift/o_out[0](a25_barrel_shift)0.00002.4355 f
u_amber/u_execute/barrel_shift_out[0](net)1.63610.00002.4355 f
u_amber/u_execute/u_alu/i_b_in[0](a25_alu)0.00002.4355 f
u_amber/u_execute/u_alu/i_b_in[0] (net)1.63610.00002.4355 f
u_amber/u_execute/u_alu/U369/A1(AO21X1_HVT)0.10310.01442.4499 f
u_amber/u_execute/u_alu/U369/Y(AO21X1_HVT)0.04370.11032.5602 f
u_amber/u_execute/u_alu/a[0] (net)52.81550.00002.5602 f
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_U214/A2 (NOR2X0_HVT)0.04370.02192.5822 f
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_U214/Y (NOR2X0_HVT)0.02310.07282.6549 r
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_n172 (net) 31.62810.00002.6549 r
u_amber/u_execute/u_alu/U13/A2(OAI21X2_HVT)0.02310.01562.6706 r
u_amber/u_execute/u_alu/U13/Y(OAI21X2_HVT)0.02870.10532.7759 f
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_n171 (net) 21.13160.00002.7759 f
u_amber/u_execute/u_alu/U181/A1(AO21X1_HVT)0.02870.01412.7900 f
u_amber/u_execute/u_alu/U181/Y(AO21X1_HVT)0.02180.06062.8507 f
u_amber/u_execute/u_alu/n110 (net)10.60120.00002.8507 f
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_U194/A1(AOI21X1_HVT) 0.02180.01322.8638 f
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_U194/Y (AOI21X1_HVT) 0.02240.08102.9448 r
u_amber/u_execute/u_alu/DP_OP_34J16_124_6843_n160 (net) 11.30400.00002.9448 r
u_amber/u_execute/u_alu/U172/A1(XOR2X2_HVT)0.02240.02862.9734 r
u_amber/u_execute/u_alu/U172/Y(XOR2X2_HVT)0.02650.08723.0606 f
u_amber/u_execute/u_alu/n104 (net)10.63290.00003.0606 f
u_amber/u_execute/u_alu/U173/A1(OR2X1_HVT)0.02650.01393.0744 f
u_amber/u_execute/u_alu/U173/Y(OR2X1_HVT)0.02060.05003.1244 f
u_amber/u_execute/u_alu/n441 (net)10.62770.00003.1244 f
u_amber/u_execute/u_alu/U318/A1(NAND3X0_HVT)0.02060.01383.1382 f
u_amber/u_execute/u_alu/U318/Y(NAND3X0_HVT)0.04940.03023.1684 r
u_amber/u_execute/u_alu/o_out[3] (net)31.51150.00003.1684 r
u_amber/u_execute/u_alu/o_out[3](a25_alu)0.00003.1684 r
u_amber/u_execute/alu_out_pc_filtered[3](net)1.51150.00003.1684 r
u_amber/u_execute/U1097/A1 (AO21X1_HVT)0.04940.01393.1824 r
u_amber/u_execute/U1097/Y (AO21X1_HVT)0.03430.09253.2749 r
u_amber/u_execute/C1_Z_3 (net)11.05190.00003.2749 r
u_amber/u_execute/DP_OP_132J4_124_3115_U29/A0(HADDX1_HVT)0.03430.02113.2960 r
u_amber/u_execute/DP_OP_132J4_124_3115_U29/C1(HADDX1_HVT)0.03250.07753.3735 r
u_amber/u_execute/DP_OP_132J4_124_3115_n28(net)11.03290.00003.3735 r
u_amber/u_execute/DP_OP_132J4_124_3115_U28/B0(HADDX1_HVT)0.03250.02083.3943 r
u_amber/u_execute/DP_OP_132J4_124_3115_U28/C1(HADDX1_HVT)0.03170.07013.4644 r
u_amber/u_execute/DP_OP_132J4_124_3115_n27(net)11.03290.00003.4644 r
u_amber/u_execute/DP_OP_132J4_124_3115_U27/B0(HADDX1_HVT)0.03170.02083.4851 r
u_amber/u_execute/DP_OP_132J4_124_3115_U27/C1(HADDX1_HVT)0.03170.06983.5549 r
u_amber/u_execute/DP_OP_132J4_124_3115_n26(net)11.03290.00003.5549 r
u_amber/u_execute/DP_OP_132J4_124_3115_U26/B0(HADDX1_HVT)0.03170.02083.5756 r
u_amber/u_execute/DP_OP_132J4_124_3115_U26/C1(HADDX1_HVT)0.03170.06983.6454 r
u_amber/u_execute/DP_OP_132J4_124_3115_n25(net)11.03290.00003.6454 r
u_amber/u_execute/DP_OP_132J4_124_3115_U25/B0(HADDX1_HVT)0.03170.02083.6662 r
u_amber/u_execute/DP_OP_132J4_124_3115_U25/C1(HADDX1_HVT)0.03170.06983.7359 r
u_amber/u_execute/DP_OP_132J4_124_3115_n24(net)11.03290.00003.7359 r
u_amber/u_execute/DP_OP_132J4_124_3115_U24/B0(HADDX1_HVT)0.03170.02083.7567 r
u_amber/u_execute/DP_OP_132J4_124_3115_U24/C1(HADDX1_HVT)0.03170.06983.8265 r
u_amber/u_execute/DP_OP_132J4_124_3115_n23(net)11.03290.00003.8265 r
u_amber/u_execute/DP_OP_132J4_124_3115_U23/B0(HADDX1_HVT)0.03170.02083.8472 r
u_amber/u_execute/DP_OP_132J4_124_3115_U23/C1(HADDX1_HVT)0.03170.06983.9170 r
u_amber/u_execute/DP_OP_132J4_124_3115_n22(net)11.03290.00003.9170 r
u_amber/u_execute/DP_OP_132J4_124_3115_U22/B0(HADDX1_HVT)0.03170.02083.9377 r
u_amber/u_execute/DP_OP_132J4_124_3115_U22/C1(HADDX1_HVT)0.03170.06984.0075 r
u_amber/u_execute/DP_OP_132J4_124_3115_n21(net)11.03290.00004.0075 r
u_amber/u_execute/DP_OP_132J4_124_3115_U21/B0(HADDX1_HVT)0.03170.02084.0283 r
u_amber/u_execute/DP_OP_132J4_124_3115_U21/C1(HADDX1_HVT)0.03170.06984.0980 r
u_amber/u_execute/DP_OP_132J4_124_3115_n20(net)11.03290.00004.0980 r
u_amber/u_execute/DP_OP_132J4_124_3115_U20/B0(HADDX1_HVT)0.03170.02084.1188 r
u_amber/u_execute/DP_OP_132J4_124_3115_U20/C1(HADDX1_HVT)0.03520.07374.1925 r
u_amber/u_execute/DP_OP_132J4_124_3115_n19(net)21.58920.00004.1925 r
u_amber/u_execute/DP_OP_132J4_124_3115_U19/B0(HADDX1_HVT)0.03520.02394.2165 r
u_amber/u_execute/DP_OP_132J4_124_3115_U19/C1(HADDX1_HVT)0.02890.06784.2842 r
u_amber/u_execute/DP_OP_132J4_124_3115_n18(net)10.61380.00004.2842 r
u_amber/u_execute/U190/A1 (AND2X1_HVT)0.02890.01234.2966 r
u_amber/u_execute/U190/Y (AND2X1_HVT)0.02460.05714.3536 r
u_amber/u_execute/DP_OP_132J4_124_3115_n17(net)11.03290.00004.3536 r
u_amber/u_execute/DP_OP_132J4_124_3115_U17/B0(HADDX1_HVT)0.02460.02084.3744 r
u_amber/u_execute/DP_OP_132J4_124_3115_U17/C1(HADDX1_HVT)0.03170.06704.4414 r
u_amber/u_execute/DP_OP_132J4_124_3115_n16(net)11.03290.00004.4414 r
u_amber/u_execute/DP_OP_132J4_124_3115_U16/B0(HADDX1_HVT)0.03170.02084.4621 r
u_amber/u_execute/DP_OP_132J4_124_3115_U16/C1(HADDX1_HVT)0.03170.06984.5319 r
u_amber/u_execute/DP_OP_132J4_124_3115_n15(net)11.03290.00004.5319 r
u_amber/u_execute/DP_OP_132J4_124_3115_U15/B0(HADDX1_HVT)0.03170.02084.5527 r
u_amber/u_execute/DP_OP_132J4_124_3115_U15/C1(HADDX1_HVT)0.03170.06984.6224 r
u_amber/u_execute/DP_OP_132J4_124_3115_n14(net)11.03290.00004.6224 r
u_amber/u_execute/DP_OP_132J4_124_3115_U14/B0(HADDX1_HVT)0.03170.02084.6432 r
u_amber/u_execute/DP_OP_132J4_124_3115_U14/C1(HADDX1_HVT)0.03170.06984.7130 r
u_amber/u_execute/DP_OP_132J4_124_3115_n13(net)11.03290.00004.7130 r
u_amber/u_execute/DP_OP_132J4_124_3115_U13/B0(HADDX1_HVT)0.03170.02084.7337 r
u_amber/u_execute/DP_OP_132J4_124_3115_U13/C1(HADDX1_HVT)0.03170.06984.8035 r
u_amber/u_execute/DP_OP_132J4_124_3115_n12(net)11.03290.00004.8035 r
u_amber/u_execute/DP_OP_132J4_124_3115_U12/B0(HADDX1_HVT)0.03170.02084.8242 r
u_amber/u_execute/DP_OP_132J4_124_3115_U12/C1(HADDX1_HVT)0.03170.06984.8940 r
u_amber/u_execute/DP_OP_132J4_124_3115_n11(net)11.03290.00004.8940 r
u_amber/u_execute/DP_OP_132J4_124_3115_U11/B0(HADDX1_HVT)0.03170.02084.9148 r
u_amber/u_execute/DP_OP_132J4_124_3115_U11/C1(HADDX1_HVT)0.03170.06984.9845 r
u_amber/u_execute/DP_OP_132J4_124_3115_n10(net)11.03290.00004.9845 r
u_amber/u_execute/DP_OP_132J4_124_3115_U10/B0(HADDX1_HVT)0.03170.02085.0053 r
u_amber/u_execute/DP_OP_132J4_124_3115_U10/C1(HADDX1_HVT)0.03170.06985.0751 r
u_amber/u_execute/DP_OP_132J4_124_3115_n9(net)11.03290.00005.0751 r
u_amber/u_execute/DP_OP_132J4_124_3115_U9/B0(HADDX1_HVT)0.03170.02085.0958 r
u_amber/u_execute/DP_OP_132J4_124_3115_U9/C1(HADDX1_HVT)0.03170.06985.1656 r
u_amber/u_execute/DP_OP_132J4_124_3115_n8(net)11.03290.00005.1656 r
u_amber/u_execute/DP_OP_132J4_124_3115_U8/B0(HADDX1_HVT)0.03170.02085.1863 r
u_amber/u_execute/DP_OP_132J4_124_3115_U8/C1(HADDX1_HVT)0.03170.06985.2561 r
u_amber/u_execute/DP_OP_132J4_124_3115_n7(net)11.03290.00005.2561 r
u_amber/u_execute/DP_OP_132J4_124_3115_U7/B0(HADDX1_HVT)0.03170.02085.2769 r
u_amber/u_execute/DP_OP_132J4_124_3115_U7/C1(HADDX1_HVT)0.03170.06985.3466 r
u_amber/u_execute/DP_OP_132J4_124_3115_n6(net)11.03290.00005.3466 r
u_amber/u_execute/DP_OP_132J4_124_3115_U6/B0(HADDX1_HVT)0.03170.02085.3674 r
u_amber/u_execute/DP_OP_132J4_124_3115_U6/C1(HADDX1_HVT)0.03170.06985.4372 r
u_amber/u_execute/DP_OP_132J4_124_3115_n5(net)11.03290.00005.4372 r
u_amber/u_execute/DP_OP_132J4_124_3115_U5/B0(HADDX1_HVT)0.03170.02085.4579 r
u_amber/u_execute/DP_OP_132J4_124_3115_U5/C1(HADDX1_HVT)0.03170.06985.5277 r
u_amber/u_execute/DP_OP_132J4_124_3115_n4(net)11.03290.00005.5277 r
u_amber/u_execute/DP_OP_132J4_124_3115_U4/B0(HADDX1_HVT)0.03170.02085.5484 r
u_amber/u_execute/DP_OP_132J4_124_3115_U4/C1(HADDX1_HVT)0.03170.06985.6182 r
u_amber/u_execute/DP_OP_132J4_124_3115_n3(net)11.03290.00005.6182 r
u_amber/u_execute/DP_OP_132J4_124_3115_U3/B0(HADDX1_HVT)0.03170.02085.6390 r
u_amber/u_execute/DP_OP_132J4_124_3115_U3/C1(HADDX1_HVT)0.03170.06985.7087 r
u_amber/u_execute/DP_OP_132J4_124_3115_n2(net)11.03290.00005.7087 r
u_amber/u_execute/DP_OP_132J4_124_3115_U2/B0(HADDX1_HVT)0.03170.02085.7295 r
u_amber/u_execute/DP_OP_132J4_124_3115_U2/C1(HADDX1_HVT)0.03140.06955.7989 r
u_amber/u_execute/DP_OP_132J4_124_3115_n1(net)10.99150.00005.7989 r
u_amber/u_execute/DP_OP_132J4_124_3115_U1/A1(XOR2X1_HVT)0.03140.01995.8189 r
u_amber/u_execute/DP_OP_132J4_124_3115_U1/Y(XOR2X1_HVT)0.03050.10625.9250 f
u_amber/u_execute/C55_DATA4_31 (net)10.55650.00005.9250 f
u_amber/u_execute/R_2533/D (DFFX1_HVT)0.03050.01125.9362 f
data arrival time5.9362
clock sysclk (rise edge)5.00005.0000
clock network delay (ideal)0.00005.0000
u_amber/u_execute/R_2533/CLK (DFFX1_HVT)0.00005.0000 r
library setup time-0.03704.9630
data required time4.9630
----------------------------------------------------------------------------------------------
data required time4.9630
data arrival time-5.9362
----------------------------------------------------------------------------------------------
slack (VIOLATED)-0.9732
（2）
Startpoint:u_amber/u_mem/R_2532
(rising edge-triggered flip-flopclocked by sysclk)
Endpoint:u_amber/u_fetch/u_cache/address_r_reg_10_
(rising edge-triggered flip-flopclocked by sysclk)
Path Group: sysclk
Path Type: max
Des/Clust/PortWire Load ModelLibrary
------------------------------------------------
system1000000saed32hvt_tt1p05v25c
a25_mem140000saed32hvt_tt1p05v25c
a25_dcache140000saed32hvt_tt1p05v25c
a25_core280000saed32hvt_tt1p05v25c
a25_wishbone8000saed32hvt_tt1p05v25c
a25_fetch140000saed32hvt_tt1p05v25c
a25_icache140000saed32hvt_tt1p05v25c
PointFanoutCapTransIncrPath
----------------------------------------------------------------------------------------------
clock sysclk (rise edge)0.00000.0000
clock network delay (ideal)0.00000.0000
u_amber/u_mem/R_2532/CLK (DFFX2_HVT)0.00000.0000 #0.0000 r
u_amber/u_mem/R_2532/Q (DFFX2_HVT)0.04990.18840.1884 f
u_amber/u_mem/N19 (net)26.19380.00000.1884 f
u_amber/u_mem/U111/S1 (MUX41X1_HVT)0.04990.73000.9184 f
u_amber/u_mem/U111/Y (MUX41X1_HVT)0.05190.13251.0509 r
u_amber/u_mem/n344 (net)10.70980.00001.0509 r
u_amber/u_mem/U34/A2 (OR2X1_HVT)0.05190.14341.1943 r
u_amber/u_mem/U34/Y (OR2X1_HVT)0.02360.06511.2594 r
u_amber/u_mem/n48 (net)21.01970.00001.2594 r
u_amber/u_mem/U105/A2 (AND3X1_HVT)0.02360.12321.3826 r
u_amber/u_mem/U105/Y (AND3X1_HVT)0.02940.07701.4596 r
u_amber/u_mem/n47 (net)10.53880.00001.4596 r
u_amber/u_mem/U100/A1 (AND4X1_HVT)0.02940.10881.5685 r
u_amber/u_mem/U100/Y (AND4X1_HVT)0.04010.08871.6572 r
u_amber/u_mem/n20 (net)10.55320.00001.6572 r
u_amber/u_mem/U193/A2 (AND2X1_HVT)0.04010.11171.7689 r
u_amber/u_mem/U193/Y (AND2X1_HVT)0.02420.06851.8374 r
u_amber/u_mem/sel_cache_p (net)21.01690.00001.8374 r
u_amber/u_mem/u_dcache/i_request(a25_dcache)0.00001.8374 r
u_amber/u_mem/u_dcache/i_request (net)1.01690.00001.8374 r
u_amber/u_mem/u_dcache/U300/A1(AO21X1_HVT)0.02420.12901.9663 r
u_amber/u_mem/u_dcache/U300/Y(AO21X1_HVT)0.03560.08522.0515 r
u_amber/u_mem/u_dcache/n39 (net)31.43830.00002.0515 r
u_amber/u_mem/u_dcache/U93/A1(NAND3X2_HVT)0.03560.14372.1952 r
u_amber/u_mem/u_dcache/U93/Y(NAND3X2_HVT)0.02990.10602.3012 f
u_amber/u_mem/u_dcache/n610 (net)52.75110.00002.3012 f
u_amber/u_mem/u_dcache/U182/A4(OAI221X1_HVT)0.02990.16042.4616 f
u_amber/u_mem/u_dcache/U182/Y (OAI221X1_HVT)0.02040.08782.5494 r
u_amber/u_mem/u_dcache/o_wb_req (net)21.03230.00002.5494 r
u_amber/u_mem/u_dcache/o_wb_req(a25_dcache)0.00002.5494 r
u_amber/u_mem/cached_wb_req (net)1.03230.00002.5494 r
u_amber/u_mem/U120/A1 (AND2X1_HVT)0.02040.14442.6938 r
u_amber/u_mem/U120/Y (AND2X1_HVT)0.02470.05372.7475 r
u_amber/u_mem/o_wb_cached_req (net)21.05050.00002.7475 r
u_amber/u_mem/o_wb_cached_req (a25_mem)0.00002.7475 r
u_amber/dcache_wb_cached_req (net)1.05050.00002.7475 r
u_amber/u_wishbone/i_dcache_cached_req(a25_wishbone)0.00002.7475 r
u_amber/u_wishbone/i_dcache_cached_req(net)1.05050.00002.7475 r
u_amber/u_wishbone/U305/A1 (AO21X1_HVT)0.02470.14372.8912 r
u_amber/u_wishbone/U305/Y (AO21X1_HVT)0.04050.09122.9824 r
u_amber/u_wishbone/n250 (net)42.30640.00002.9824 r
u_amber/u_wishbone/U304/A4 (AO22X1_HVT)0.04050.01702.9994 r
u_amber/u_wishbone/U304/Y (AO22X1_HVT)0.04080.09063.0900 r
u_amber/u_wishbone/o_dcache_cached_ready(net)42.09560.00003.0900 r
u_amber/u_wishbone/o_dcache_cached_ready(a25_wishbone)0.00003.0900 r
u_amber/dcache_wb_cached_ready (net)2.09560.00003.0900 r
u_amber/u_mem/i_wb_cached_ready(a25_mem)0.00003.0900 r
u_amber/u_mem/i_wb_cached_ready (net)2.09560.00003.0900 r
u_amber/u_mem/u_dcache/i_wb_ready(a25_dcache)0.00003.0900 r
u_amber/u_mem/u_dcache/i_wb_ready (net)2.09560.00003.0900 r
u_amber/u_mem/u_dcache/U144/A1(AND3X1_HVT)0.04080.18073.2708 r
u_amber/u_mem/u_dcache/U144/Y (AND3X1_HVT)0.02970.07323.3440 r
u_amber/u_mem/u_dcache/n611 (net)10.55090.00003.3440 r
u_amber/u_mem/u_dcache/U146/A4(OA22X1_HVT)0.02970.11133.4553 r
u_amber/u_mem/u_dcache/U146/Y(OA22X1_HVT)0.03390.07173.5270 r
u_amber/u_mem/u_dcache/n616 (net)21.06310.00003.5270 r
u_amber/u_mem/u_dcache/U65/A3(NAND3X0_HVT)0.03390.12533.6523 r
u_amber/u_mem/u_dcache/U65/Y(NAND3X0_HVT)0.05670.06803.7202 f
u_amber/u_mem/u_dcache/n617 (net)10.46810.00003.7202 f
u_amber/u_mem/u_dcache/U161/A2(NAND2X0_HVT)0.05670.09453.8148 f
u_amber/u_mem/u_dcache/U161/Y(NAND2X0_HVT)0.04910.05793.8727 r
u_amber/u_mem/u_dcache/o_stall_BAR (net)31.66690.00003.8727 r
u_amber/u_mem/u_dcache/o_stall_BAR(a25_dcache)0.00003.8727 r
u_amber/u_mem/n17 (net)1.66690.00003.8727 r
u_amber/u_mem/U184/A1 (AND2X1_HVT)0.04910.16024.0329 r
u_amber/u_mem/U184/Y (AND2X1_HVT)0.02530.06504.0979 r
u_amber/u_mem/o_wb_uncached_req (net)20.96760.00004.0979 r
u_amber/u_mem/o_wb_uncached_req(a25_mem)0.00004.0979 r
u_amber/dcache_wb_uncached_req (net)0.96760.00004.0979 r
u_amber/u_wishbone/i_dcache_uncached_req(a25_wishbone)0.00004.0979 r
u_amber/u_wishbone/i_dcache_uncached_req(net)0.96760.00004.0979 r
u_amber/u_wishbone/U301/A1 (AO21X1_HVT)0.02530.14374.2415 r
u_amber/u_wishbone/U301/Y (AO21X1_HVT)0.03670.08704.3286 r
u_amber/u_wishbone/o_dcache_uncached_ready(net) 31.63220.00004.3286 r
u_amber/u_wishbone/o_dcache_uncached_ready(a25_wishbone)0.00004.3286 r
u_amber/dcache_wb_uncached_ready (net)1.63220.00004.3286 r
u_amber/u_mem/i_wb_uncached_ready(a25_mem)0.00004.3286 r
u_amber/u_mem/i_wb_uncached_ready (net)1.63220.00004.3286 r
u_amber/u_mem/U168/A3 (AO21X1_HVT)0.03670.16024.4888 r
u_amber/u_mem/U168/Y (AO21X1_HVT)0.03020.05184.5406 r
u_amber/u_mem/n310 (net)10.47820.00004.5406 r
u_amber/u_mem/U87/A2 (NAND2X0_HVT)0.03020.09664.6372 r
u_amber/u_mem/U87/Y (NAND2X0_HVT)0.07470.06984.7069 f
u_amber/u_mem/o_mem_stall (net)31.78190.00004.7069 f
u_amber/u_mem/o_mem_stall (a25_mem)0.00004.7069 f
u_amber/mem_stall (net)1.78190.00004.7069 f
u_amber/U5/A (NBUFFX2_HVT)0.07470.16884.8757 f
u_amber/U5/Y (NBUFFX2_HVT)0.02630.06224.9379 f
u_amber/n3 (net)21.20550.00004.9379 f
u_amber/u_fetch/i_mem_stall (a25_fetch)0.00004.9379 f
u_amber/u_fetch/i_mem_stall (net)1.20550.00004.9379 f
u_amber/u_fetch/U22/A1 (OR2X2_HVT)0.02630.16545.1033 f
u_amber/u_fetch/U22/Y (OR2X2_HVT)0.02470.05865.1619 f
u_amber/u_fetch/core_stall (net)42.10240.00005.1619 f
u_amber/u_fetch/u_cache/i_core_stall(a25_icache)0.00005.1619 f
u_amber/u_fetch/u_cache/i_core_stall(net)2.10240.00005.1619 f
u_amber/u_fetch/u_cache/U135/A(IBUFFX2_HVT)0.02470.14975.3116 f
u_amber/u_fetch/u_cache/U135/Y(IBUFFX2_HVT)0.03560.07325.3848 r
u_amber/u_fetch/u_cache/n215 (net)116.42180.00005.3848 r
u_amber/u_fetch/u_cache/U220/A4(AO22X1_HVT)0.03560.30305.6877 r
u_amber/u_fetch/u_cache/U220/Y(AO22X1_HVT)0.03510.08155.7693 r
u_amber/u_fetch/u_cache/address_c[10](net)21.10400.00005.7693 r
u_amber/u_fetch/u_cache/address_r_reg_10_/D(DFFX1_HVT)0.03510.13135.9006 r
data arrival time5.9006
clocksysclk (rise edge)5.00005.0000
clock network delay (ideal)0.00005.0000
u_amber/u_fetch/u_cache/address_r_reg_10_/CLK(DFFX1_HVT)0.00005.0000 r
library setup time-0.07094.9291
data required time4.9291
----------------------------------------------------------------------------------------------
data required time4.9291
data arrival time-5.9006
----------------------------------------------------------------------------------------------
slack (VIOLATED)-0.9715
不知道有什么办法能解决这个slack violation的问题（如果不换工艺库的话(>_<)）
从critical path上看感觉第二条cache那边有点诡异额。为什么会进进出出的 = =
网上也搜了很多了，但感觉尝试了很多方法都没什么变化，有时候slack甚至还负的恐怖了。
希望版上各路大虾支支招，感激不尽啊。T T
为啥我编辑的时候report还是蛮整齐的==。编辑完就有点乱了。
为啥都用HVT的cell?用点normal和LVT的cell试试。
3Q
用rvt试过，也是负的，大概-0.34。lvt slack是正的，但是因为对power有规定。lvt的leakage power直接数量级就上去了。如果这些关键路径用lvt的话power会有多少影响呢。还有DC里面要怎么弄才可以针对性地设定lvt或者hvt?
那有没有其他办法了?(>_<)
多库综合试试，critical path上换成svt或者lvt。
求问怎样可以只把critical path上的库换掉
修setup时先不管功耗优化的事情，到修hold时，使用HVT。
1.多库综合试试，critical path上换成svt或者lvt。
2. try to flatten this group
3.please check this path at ICC side .Maybe ICC can solve it.
3Q啊那在critical path上换库，有什么指令么?还是得自己写脚本换一下呢。试过多库综合，最后出来的结果就是基本都用了快的库。怎么控制DC去选择什么库呢?然后用flatten有的时候情况更糟，不知道为什么额
看不懂啊……